JP2022516295A - A heating device having an electromagnetic wave generation system and an electromagnetic wave generation system - Google Patents

Abstract

The electromagnetic wave generation system includes an electromagnetic wave generation module, a radiation component, and a matching means connected in series with the electromagnetic wave generation module and the radiation component. The electromagnetic wave generation module is arranged to generate an electromagnetic wave signal. The radiating component comprises one or more radiating means and is installed so as to be electrically connected to the electromagnetic wave generation module so as to generate an electromagnetic wave of a corresponding frequency based on the electromagnetic wave signal. Matching means include a first matching module, a second matching module, and a constant inductor. The first matching module is installed so that the input end is electrically connected to the electromagnetic generation module. The constant inductor is connected in series to the output end of the first matching module and the radiating component. The input end of the second matching module is connected in series to the output end of the first matching module and the inductor, and the output end is installed on the ground. The first matching module and the second matching module include a plurality of branch circuits connected in parallel so as to realize a load combination that is a multiple of the total number of branch circuits connected in parallel in each of the two matching modules. [Selection diagram] FIG. 8

Description

The present invention relates to kitchen utensils, and more particularly to an electromagnetic wave generation system and a heating device having an electromagnetic wave generation system.

Food has been maintained in quality during freezing, but it is necessary that the frozen food be thawed before processing or edible. In the prior art, an electromagnetic wave device for thawing food is additionally installed in the refrigerating / freezing device so that the user can conveniently freeze and thaw the food.

However, the dielectric constant of food differs depending on the type. Even in the case of foods of the same type, the dielectric constant changes as the temperature changes during thawing, so the electromagnetic wave absorption rate of the food also changes up and down. Therefore, it is necessary to design an efficient electromagnetic wave generation system and a heating device having an electromagnetic wave generation system applied to different loads.

A first object of the present invention is to provide an efficient electromagnetic wave generation system applicable to different loads.

A second object of the present invention is to provide a heating device having an electromagnetic wave generation system.

In one embodiment of the invention
An electromagnetic wave generation module arranged to generate an electromagnetic wave signal, and
Radiation components that include one or more radiating means and are installed to be electrically connected to the electromagnetic generation module so that they generate electromagnetic waves of corresponding frequencies based on the electromagnetic signal.
An electromagnetic wave generation system comprising matching means connected in series between the electromagnetic wave generation module and the radiating component so as to adjust the load impedance of the electromagnetic wave generation module.
The matching means
The first matching module installed so that the input end is electrically connected to the electromagnetic generation module,
A constant inductor connected in series between the output end of the first matching module and the radiating component,
A second matching module in which the input end is connected in series to the output end of the first matching module and the constant inductor and the output end is grounded and installed.
The first matching module and the second matching module each include a plurality of branch circuits connected in parallel.
To provide an electromagnetic wave generation system characterized by this.

Preferably, each branch circuit connected in parallel in the first matching module includes one constant capacitor and one switch connected in series.

Preferably, the switch in the first matching module is integrated as an array type switch component.

Preferably, each branch circuit connected in parallel in the second matching module includes one constant capacitor and one switch connected in series.

Preferably, the switch in the second matching module is integrated as an array type switch component.

Preferably, the electromagnetic wave generation system is
A detection means connected in series between the matching means and the electromagnetic generation module and arranged to detect specific parameters for the passing incident wave signal and the reflected wave signal.
The electromagnetic wave absorption rate is calculated based on the specific parameter, and further includes a control means arranged to transmit an adjustment command to the matching means based on the electromagnetic wave absorption rate.

In one embodiment of the invention
The cylinder in which the entrance and exit are formed, and
A door portion installed at the entrance / exit so as to open / close the entrance / exit,
The electromagnetic wave generation system according to any one of the above, wherein at least a part thereof is installed in the cylinder or communicates with the inside of the cylinder so as to generate an electromagnetic wave in the cylinder to heat an object waiting to be processed. A heating device including is provided.

Preferably, the matching means is installed in the cylinder, the heating device further includes a case, the case includes an internal space of the cylinder, a heating chamber in which a waiting object is installed, and the matching. It is installed so as to partition into the electrical equipment room where the means are installed.

Preferably, heat dissipation holes are provided at positions corresponding to the matching means in the cylinder and the case.

Preferably, the detection means, the control means, and the matching means are integrated on a circuit board, the cylinder is made of metal and installed grounded, and the circuit board is mounted on the cylinder. It is installed so that it is electrically connected.

The electromagnetic wave generation system according to the present invention includes a plurality of branch circuits in which each is connected in parallel between the electromagnetic wave generation module and the radiating component, and a matching module for grounding one end away from the output end of the electromagnetic wave generation module is connected in series. By doing so, it is possible to realize a load combination that is a multiple of the total number of branch circuits connected in parallel in the two matching modules. Compared with the technical means of adjusting the distance between the radiating means and the receiving end by the configuration of the mechanical / electric motor in the prior art, the cost is further reduced, the reliability is further increased, and the response speed is further increased. Compared with the technical means of adjusting the load impedance using a variable capacitor and a variable inductor in the prior art, the cost is further reduced, the reliability is further increased, and the adjustment range is further expanded.

Hereinafter, specific examples of the present invention will be described in detail with reference to the drawings. One of ordinary skill in the art will be able to clearly understand the above and other purposes, advantages and properties of the present invention.

Below, with reference to the drawings, some specific embodiments of the present invention will be described in detail, based on exemplary and non-limiting embodiments. The drawings show the same or similar parts and parts by the same reference numerals. It should be understood by those skilled in the art that these drawings do not necessarily have to be drawn to a certain scale.
It is a schematic block diagram of the heating apparatus in one Example of this invention. It is schematic cross-sectional view of the heating apparatus shown in FIG. 1 which abbreviated an electromagnetic generation module and a power feeding module. It is a schematic enlarged view of the area A in FIG. It is a schematic block diagram of the electric equipment room in one Example of this invention. It is a schematic enlarged view of the area B in FIG. It is a schematic block diagram of the electric equipment room in another embodiment of this invention. It is a schematic enlarged view of the region C in FIG. It is a circuit diagram of the matching means in one Embodiment of this invention.

FIG. 1 is a schematic configuration diagram of a heating device 100 according to an embodiment of the present invention. FIG. 2 is a schematic cross-sectional view of the heating device 100 shown in FIG. 1 in which the electromagnetic generation module 161 and the power supply module 162 are abbreviated. Referring to FIGS. 1 and 2, the heating device 100 includes a cylinder 110, a door portion 120, and an electromagnetic wave generation system.

The tubular body 110 is for placing an object waiting to be processed, and an inlet / outlet for putting in / out the object waiting to be processed is provided on the front wall or the ceiling wall thereof. The door portion 120 is attached to the tubular body 110 by an appropriate method such as a slide rail connection or a hinge connection, and is for opening and closing an inlet / outlet.

In this embodiment, as shown in the figure, the heating device 100 further includes a drawer 140 for placing an object waiting to be processed, and the drawer 140 is installed so that the front wall is fixedly connected to the door portion 120. The two lateral sidewalls are movably connected to the cylinder 110 via slide rails.

In some embodiments, the electromagnetic wave generation system comprises an electromagnetic wave generation module 161, a power supply module 162, and a radiating component.

The power supply module 162 is electrically connected to and installed in the electromagnetic wave generation module 161 so as to supply electric power to the electromagnetic wave generation module 161 and cause the electromagnetic wave generation module 161 to generate an electromagnetic wave signal. The radiating component includes one or more radiating means installed in or communicated with the cylinder 110. Each of the one or more radiating means is electrically connected to the electromagnetic wave generation module 161 to generate an electromagnetic wave having a corresponding frequency based on the electromagnetic wave signal, and heats the object waiting to be processed in the cylinder 110. In some embodiments, the number of radiant means is one. The radiating means is a flat plate type radiating antenna 150.

The cylinder 110 and the door 120 are each provided with the characteristics of an electromagnetic shield so that the door 120 and the cylinder 110 are electrically connected while the door 120 is closed to prevent leakage of electromagnetic waves.

In some embodiments, the cylinder 110 is made of metal and, as a receiving electrode, receives the electromagnetic waves generated by the radiating antenna 150. In some other embodiments, the cylinder 110 may have a receiving electrode plate mounted on the ceiling wall to receive the electromagnetic waves generated by the radiating antenna 150.

FIG. 3 is a schematic enlarged view of the region A in FIG. Referring to FIGS. 1 to 3, the heating device 100 further includes a signal processing / measurement control circuit. Specifically, the signal processing / measurement control circuit includes a detection means 171 and a control means 172, and a matching means 173.

The detection means 171 is connected in series between the electromagnetic generation module 161 and the radiation antenna 150, and is arranged so as to detect specific parameters for the passing incident wave signal and reflected wave signal in real time.

The control means 172 is installed so as to acquire a specific parameter from the detection means 171 and calculate the power of the incident wave and the reflected wave based on the specific parameter. In the present invention, the specific parameter may be a voltage value and / or a current value. The detecting means 171 may be a power meter for directly measuring the power of the incident wave and the reflected wave.

The control means 172 further calculates the electromagnetic wave absorption rate of the object waiting for processing based on the power of the incident wave and the reflected wave, compares the electromagnetic wave absorption rate with a predetermined absorption threshold value, and the electromagnetic wave absorption rate is a predetermined absorption threshold value. If it is smaller than, an adjustment command is transmitted to the matching means 173. The predetermined absorption threshold may be 60-80%, for example 60%, 70%, or 80%.

The matching means 173 is connected in series between the electromagnetic generation module 161 and the radiation antenna 150, and is arranged so as to adjust the load impedance of the electromagnetic generation module 161 based on the adjustment command of the control means 172. As a result, the output impedance and load impedance of the electromagnetic wave generation module 161 have a higher degree of matching, and food having different unique characteristics (type, weight, volume, etc.) is placed in the heating chamber 111, or the temperature of the food is changed. Even if it changes, a relatively large amount of electromagnetic wave energy is radiated to the heating chamber 111, so that the heating speed is increased.

FIG. 8 is a circuit diagram of a matching means according to an embodiment of the present invention, where OUT indicates an output end of the matching means and IN indicates an input end of the matching means. Referring to FIG. 8, matching means 173 includes a first matching module 1731, a second matching module 1732, and one constant inductor. The first matching module 1731 may include a plurality of branch circuits connected in parallel, and may be installed so that the input ends of the plurality of branch circuits are electrically connected to the electromagnetic generation module 161. The constant inductor is connected in series between the output end of the first matching module 1731 and the radiating antenna 150. The second matching module 1732 includes a plurality of branch circuits connected in parallel, the input ends of the plurality of branch circuits are connected in series between the first matching module 1731 and the constant inductor, and the output ends are grounded. You may.

In the electromagnetic wave generation system according to the present invention, two matching modules including a plurality of branch circuits, each of which is connected in parallel, are connected in series between the electromagnetic wave generation module and the radiating component, and are separated from the output end of the electromagnetic wave generation module. Since one end of the matching module is grounded, it is possible to realize a load combination that is a multiple of the total number of branch circuits connected in parallel in the two matching modules. Compared with the technical means of adjusting the distance between the radiating means and the receiving end by the configuration of the mechanical / electric motor in the prior art, the cost is further reduced, the reliability is further increased, and the response speed is further increased. Compared with the technical means of adjusting the load impedance using a variable capacitor and a variable inductor in the prior art, the cost is further reduced, the reliability is further increased, and the adjustment range is further expanded.

In some embodiments, each branch circuit connected in parallel in the first matching module 1731 may include one constant capacitor and one switch connected in series. Each branch circuit connected in parallel in the second matching module 1732 may include one constant capacitor and one switch connected in series.

The plurality of switches in the first matching module 1731 and the second matching module 1732 are integrated as an array type switch component individually or collectively, and control the switch to be turned on and off.

In some embodiments, each branch circuit connected in parallel in the second matching module 1732 has one end connected in series between the output end of the first matching module 1731 and the radiating antenna 150 and the other end of the branch circuit. It may further include a constant capacitor electrically connected to the input end of the capacitor. As a result, the matching means 173 improves the matching accuracy and suppresses the error.

In some embodiments, the heating device 100 is capable of thawing. The control means 172 further calculates the rate of change of the imaginary part with respect to the dielectric constant of the object waiting to be processed based on the power of the incident wave and the reflected wave, and compares the rate of change of the imaginary part with a predetermined change threshold value. It may be arranged. When the rate of change of the imaginary part of the dielectric constant of the object awaiting processing is equal to or greater than a predetermined change threshold value, a stop command is transmitted to the electromagnetic generation module 161 so that the electromagnetic generation module 161 is stopped and does not operate. The process of decompression is over.

The predetermined change threshold is obtained by measuring the rate of change of the imaginary part with respect to the dielectric constant of a food having different intrinsic properties at -3 to 0 ° C so as to improve the shear strength of the food. be. For example, when the object waiting to be processed is raw beef, a predetermined change threshold value may be set as a preset value of 2.

The control means 172 further receives a trigger instruction to start or stop the decompression process, and based on the trigger instruction, sends a corresponding control signal so that the electromagnetic generation module 161 starts or stops and does not operate. It may be installed so as to transmit to the electromagnetic generation module 161. However, the control means 172 is electrically connected to the power supply module 162, and is arranged so as to acquire electric energy from the power supply module 162 and always maintain the standby state.

In some embodiments, the signal processing / measurement control circuit may be integrated into a single circuit board 170 for ease of attachment and maintenance to the signal processing / measurement control circuit.

The signal processing / measurement control circuit may be installed in the lower part of the rear part of the cylinder 110. As a result, the cylinder 110 has a relatively large storage space, and it is possible to prevent the circuit from being damaged due to the excessive height of the food placed on the drawer 140. The drawer 140 may form an upward recess in the rear part of the bottom wall, and one enlarged space may be formed below the recess.

FIG. 4 is a schematic configuration diagram of an electrical equipment room 112 according to an embodiment of the present invention. Referring to FIGS. 2 and 4, the heating device 100 may further include a case 130 for partitioning the internal space of the tubular body 110 into a heating chamber 111 and an electrical equipment chamber 112. The object to be processed and the circuit board 170 are installed in the heating chamber 111 and the electrical equipment chamber 112, respectively. As a result, the object to be processed and the circuit board 170 are separated, and it is possible to prevent the circuit board 170 from being damaged by accidental contact.

Specifically, the case 130 may include a partition 131 that partitions the heating chamber 111 and the electrical equipment chamber 112, and a hem 132 that is fixedly connected to the inner wall of the tubular body 110.

In some embodiments, the circuit board 170 may be installed horizontally. The two laterally extending sidewalls of the case 130 may be formed with engaging tongue portions 134 extending upward and inward, respectively. The circuit board 170 is fixedly engaged above the two engaging tongue portions 134.

The case 130 and the cylinder 110 may be provided with heat dissipation holes 190 at positions corresponding to the matching means 173, respectively. As a result, the heat energy generated when the matching means 173 is operating can be discharged through the heat dissipation hole 190.

In some embodiments, the radiating antenna 150 may be installed in the electrical equipment room 112 to prevent the radiating antenna 150 from being soiled or damaged by accidental contact.

The case 130 may be made of an insulating material so that the electromagnetic waves generated by the radiating antenna 150 pass through the case 130 and heat the object waiting to be processed. Further, the case 130 may be made of a non-transparent material so as to reduce the electromagnetic loss of the electromagnetic wave in the case 130 and increase the heating rate to the object waiting to be processed. This non-transparent material may be translucent or non-transparent. The non-transparent material may be a PP material, a PC material, an ABS material, or the like.

The case 130 may further simplify the flow of assembling the heating device 100 and may be for fixing the radiating antenna 150 so that the radiating antenna 150 can be positioned and mounted. However, the radiation antenna 150 may be installed so as to be fixedly connected to the partition 131.

In some embodiments, the radiating antenna 150 may be installed to engage and connect to the case 130. FIG. 5 is a schematic enlarged view of region B in FIG. Referring to FIG. 5, a plurality of engaging holes 151 are formed in the radiation antenna 150, and a plurality of engaging tools 133 are formed in the case 130 correspondingly. The plurality of engaging tools 133 may be engaged with and connected to the radiation antenna 150 after passing through the plurality of engaging holes 151, respectively.

In one embodiment of the present invention, the engaging tool 133 comprises two hook portions that are spaced apart and have mirror image symmetry.

FIG. 6 is a schematic configuration diagram of the electrical equipment room 112 according to another embodiment of the present invention. FIG. 7 is a schematic enlarged view of the region C in FIG. Referring to FIGS. 6 and 7, in another embodiment of the present invention, the engaging tool 133 is from a fixed portion perpendicular to the radiating antenna 150 and having a hollow central portion, and from the inner peripheral edge of the fixed portion. It consists of an elastic portion that is inclined with respect to the fixed portion and extends to the antenna.

In some other embodiments, the radiating antenna 150 may be installed so as to be secured to the case 130 by a process called electroplating.

The case 130 may further include a plurality of reinforcing ribs installed so as to connect the partition 131 and the hem 132 to increase the structural strength of the case 130.

In some embodiments, the radiating antenna 150 is placed horizontally at a position of one-third to one-half (eg, one-third, two-fifths, one-half) of the height of the cylinder 110. May be done. As a result, the volume of the heating chamber 111 becomes relatively large, and the electromagnetic waves in the heating chamber 111 have a relatively high energy density, so that the object waiting for processing is rapidly heated.

Referring to FIGS. 4 and 6, the radiating antenna 150 has a curved line whose peripheral edge is smoothed so that electromagnetic waves are more evenly distributed in the cylinder 110 and the temperature uniformity of the object waiting to be processed is improved. It may be configured. However, the smoothed curve means that the curve equations are connected by a linear derivative, and here, there are no sharp corners on the periphery of the radiation antenna 150. Means.

In some embodiments, the metal cylinder 110 may be grounded and installed so as to release charges and increase the safety of the heating device 100.

The heating device 100 may further include a metal holder 180. The metal holder 180 may be installed so as to connect the circuit board 170 and the cylinder 110 to support the circuit board 170 and discharge the electric charge in the circuit board 170 through the cylinder 110. In some embodiments, the metal holder 180 consists of two members that are perpendicular to each other. The metal holder 180 may be fixedly connected to the case 130 so as to connect the case 130 and the metal holder 180 to the tubular body 110.

Although a plurality of exemplary embodiments of the present invention have been described above in detail in the present specification, those skilled in the art should understand that the present invention still exists as long as it does not deviate from the purpose and scope of the present invention. Based on the content disclosed in the invention, it is possible to directly identify or derive a number of other modifications and modifications that fall under the principles of the invention. Therefore, what is understandable should be considered to include any of these other modifications or modifications within the scope of the invention.

Claims (10)

An electromagnetic wave generation module arranged to generate an electromagnetic wave signal, and
Radiant components that include one or more radiating means and are installed to be electrically connected to the electromagnetic generation module so as to generate electromagnetic waves of the corresponding frequency based on the electromagnetic signal.
A matching means connected in series between the electromagnetic generation module and the radiating component so as to adjust the load impedance of the electromagnetic generation module is included.
The matching means
The first matching module installed so that the input end is electrically connected to the electromagnetic generation module,
A constant inductor connected in series between the output end of the first matching module and the radiating component,
The input end includes a second matching module in which the output end of the first matching module is connected in series between the output end and the constant inductor and the output end is grounded and installed.
The first matching module and the second matching module each include a plurality of branch circuits connected in parallel.
Electromagnetic wave generation system. Each branch circuit connected in parallel in the first matching module includes one constant capacitor and one switch connected in series.
The electromagnetic wave generation system according to claim 1. The switch in the first matching module is integrated as an array type switch component.
The electromagnetic wave generation system according to claim 2. Each branch circuit connected in parallel in the second matching module includes one constant capacitor and one switch connected in series.
The electromagnetic wave generation system according to claim 1 or 2. The switch in the second matching module is integrated as an array type switch component.
The electromagnetic wave generation system according to claim 4. A detection means connected in series between the matching means and the electromagnetic generation module and arranged to detect specific parameters for the passing incident wave signal and the reflected wave signal.
Further comprising: a control means that calculates the electromagnetic wave absorption rate based on the particular parameter and is arranged to transmit an adjustment command to the matching means based on the electromagnetic wave absorption rate.
The electromagnetic wave generation system according to claim 1. The cylinder in which the entrance and exit are formed, and
A door portion installed at the entrance / exit so as to open / close the entrance / exit,
The invention according to any one of claims 1 to 5, wherein at least a part thereof is installed in the cylinder or communicates with the cylinder so as to generate an electromagnetic wave in the cylinder to heat an object waiting to be processed. Including electromagnetic wave generation system,
Heating device. The matching means is installed in the cylinder and
The heating device further includes a case.
The case is installed so as to partition the internal space of the cylinder into a heating chamber in which an object waiting to be processed is installed and an electrical equipment chamber in which the matching means is installed.
The heating device according to claim 7. A heat dissipation hole is provided at a position corresponding to the matching means in the cylinder and the case.
The heating device according to claim 8. The electromagnetic wave generation system is the electromagnetic wave generation system according to claim 6.
The detection means, the control means, and the matching means are integrated on one circuit board.
The cylinder is made of metal and is grounded and installed.
The circuit board is installed so as to be electrically connected to the cylinder.
The heating device according to claim 8.

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